Random 大型整数操作类BigInteger 大型浮点数操作类BigDecimal

package test;

import java.util.Random;

public class RandomDemo {
    public static void main(String[] args) {
        Random random = new Random();
        //输出5个0~100之间的随机数
        for(int i=0; i<5; i++) {
            System.out.print(random.nextInt(100) + "	");//2    28    14    20    12    
        }
    }

}